JP2006056345A - Seat structure of personal watercraft - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat structure of a personal watercraft capable of accommodating the seat in the hull or taking it to outside the hull according to the maneuvering condition of the boat operator. <P>SOLUTION: An accommodation space 22b is formed over an engine hatch 22a installed in the hull 10a. An opening 24a is formed in the rear end face of a hatch cover 22 to enable the seat 21 to be accommodated in the space 22b from the opening 24a, and the rear end face of the seat 21 is allowed to constitute part of the hatch cover 22 when the seat 21 is accommodated in the space 22b. Rails 25b and 25c are laid in the space 22b, and the seat 21 is made movable between the inside and outside of the space 22b while it moves fore and aft along the rails 25b and 25c. Also it is arranged so that a supporting member 39 is engaged with the bottom of a guide groove 34 for supporting the seat 21 when the seat 21 protrudes from the hatch cover 22. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a seat structure of a personal watercraft provided with a seat that can be accommodated in a hull.

Among conventionally used small planing boats, there is a small planing boat that travels on the water by operating a steering handle while the operator is sitting on a seat provided on the upper part of the hull (for example, patent Reference 1). There is also a small planing boat that travels by operating a steering handle or the like in a state where a seat is not provided on the hull and the operator is standing on a floor provided at the rear of the hull (for example, Patent Document 2). reference). In the latter type of personal watercraft, the front end of the steering pole is hinged to the front side of the upper surface of the hull so that it can be rotated in the vertical direction, thereby increasing the height of the steering handle provided at the rear end of the steering pole. The height can be changed freely.
JP-A-5-201276 Japanese Patent No. 2757999

  However, in the former of the above-mentioned conventional small planing boats, it is possible to reduce the fatigue of the operator by maneuvering and to make comfortable maneuvering, but when performing sporty maneuvers such as maneuvering the entire body while moving weight The sheet gets in the way. Further, in the latter of the conventional small planing boats described above, it is possible to perform a sporty maneuver such as maneuvering while moving the weight using the entire floor portion formed at the rear of the hull, but the operator always stands. It is necessary to take a posture, and the physical strength is consumed as compared with the case where a ship is seated on a seat and maneuvered.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to provide a small planing boat capable of storing a seat in the hull and taking it out of the hull according to the ship maneuvering state. It is to provide a sheet structure.

  In order to achieve the above-mentioned object, the structural feature of the seat structure of the personal watercraft according to the present invention is that the front side portion of the deck that constitutes the upper part of the hull is composed of a front deck portion that rises upward. In addition, a flat floor portion is formed on the rear side portion of the deck, a steering handle is provided above the approximate center in the front-rear direction of the hull, and a seat for the operator to sit behind the front deck portion of the hull. It is a seat structure of a small planing boat provided, an engine hatch that can be opened and closed by a hatch cover is provided on the rear side portion of the front deck portion in the hull, a storage space portion is formed above the engine hatch, and in the storage space portion The seats can be accommodated.

  According to the seat structure of this small planing boat, when the operator wants to operate the boat while sitting on the seat, the seat protrudes to the rear of the front deck, and when the operator wants to operate in a standing position, the seat Can be housed in a housing space formed above the engine hatch. As a result, it is possible to arbitrarily perform both a comfortable maneuvering in a comfortable posture and a sporty maneuvering while shifting weight. Further, since the seat can be accommodated in the space portion above the engine hatch, the dead space originally in the hull can be used, and it is not necessary to form a separate space portion. Further, since the engine hatch is provided at the upper part of the substantially central portion of the hull, it is easy to put in and out the seat.

  Another structural feature of the seat structure of the personal watercraft according to the present invention is that an opening is provided at the rear end of the hatch cover so that the seat can be accommodated in the accommodating space from the opening, and the seat is advanced. In this case, the rear end surface of the sheet constitutes a part of the hatch cover when stored in the storage space.

  According to the seat structure of this personal watercraft, the seat can be used by pulling out the seat from the opening at the rear end of the hatch cover. In addition, when the seat is not used, it is only necessary to push the seat into the accommodation space portion from the opening of the hatch cover, so that the operation of the seat expansion (the seat is retracted and protrudes from the front deck portion) and the accommodation operation can be performed. It becomes easy. Further, according to this, since the operator only needs to push and pull the seat in the front-rear direction, the operator can perform the operation of deploying and storing the seat without breaking the balance on the ship. Further, when the sheet is accommodated in the accommodating space, the rear end surface of the sheet forms a part of the hatch cover, and irregular irregularities are not generated on the rear end surface of the hatch cover, so that the appearance design is not impaired.

  Further, another structural feature of the seat structure of the personal watercraft according to the present invention is that a rail portion extending in the front-rear direction is provided in the accommodation space portion, and the movable portion is movable along the rail portion. And the movable part moves back and forth along the rail part, whereby the seat is accommodated in the accommodating space part or protrudes rearward from the front deck part. According to this, since the operator can pull out the seat from the engine hatch or store it in the engine hatch with one hand, it is possible to safely deploy and store the seat even in unstable places such as on the water. it can.

  Further, another structural feature of the seat structure of the personal watercraft according to the present invention is that an engagement mechanism is provided between the front end portion of the seat and the rear end portion of the rail portion, and more than the front end portion of the seat. A support member for supporting the rear side portion is provided, and when the seat is located at the rearmost portion of the rail portion, the front end portion of the seat is supported in a state of being engaged with the rear end portion of the rail portion, and the front end of the seat That is, the rear side part of the part is supported by the support member. According to this, when the seat is unfolded, the front end portion of the seat is supported by the rear end portion of the rail portion, and the predetermined portion on the rear side of the front end portion of the seat is supported by the support member, so that the seat is in a stable state. become.

  Further, another structural feature of the seat structure of the personal watercraft according to the present invention is that the engagement mechanism is capable of rotating the front end portion of the seat in the vertical direction with respect to the rear end portion of the rail portion. It is composed of an engaging mechanism. According to this, the height of the rear portion of the seat can be changed according to the physique of the ship operator.

  Further, another structural feature of the seat structure of the personal watercraft according to the present invention is that the one end of the support member is attached to the lower surface of the seat in a vertically rotatable state, and from the rear end side of the rail portion. A guide groove is provided on the lower side of the rear end face of the hatch cover so that the other end of the support member can be moved along the guide groove. When the sheet is accommodated in the accommodation space, the support member is placed along the lower surface of the sheet. The support member engages with the lower end of the guide groove to support the sheet when the sheet is accommodated in the accommodating space together with the sheet, and the sheet is moved rearward to protrude from the front deck portion. .

  Accordingly, the unfolded sheet can be supported with a simple structure, and when the sheet is accommodated in the accommodating space, the support member can be folded compactly and accommodated together with the sheet. Further, since the other end of the support member moves along the guide groove, it moves accurately on a predetermined track without being displaced. Moreover, in the state which expand | deployed the sheet | seat, since a support member supports a sheet | seat in the state which the other end part of the support member engaged with the lower end part of the guide groove, support of a sheet | seat becomes more reliable.

  Furthermore, still another structural feature of the seat structure of the personal watercraft according to the present invention is that the support member is composed of an impact relaxation member. According to this, the ride comfort of the small planing boat is improved, and a comfortable planing can be performed. Further, since the impact load applied to the seat and the hull from the operator is reduced, the seat and the hull are less likely to be damaged or consumed. In this case, a spring damper, a gas damper, or the like can be used as the impact reducing member.

  Further, another structural feature of the seat structure of the personal watercraft according to the present invention is that the length of the support member can be adjusted. According to this, the height of the rear side portion of the seat can be adjusted according to the physique and preferences of the operator.

  Further, another structural feature of the seat structure of the personal watercraft according to the present invention is that the rail portion is provided with a pair of slide recesses extending in parallel in the front-rear direction, the rail portions being provided at left and right intervals. A slide pin that is provided at the front end portion of the seat and that can be engaged with both ends being movable to a pair of slide recesses, and a track when the front end side portion moves on the rear end side portion of the rail portion The rear side portion is located in the track when the slide pin moves, and the engagement concave portion that can be engaged with the slide pin is provided below the rear side portion. This is because it is composed of a joint arm portion.

  According to this, when the slide pin provided at the front end portion of the seat moves back and forth along the slide concave portion, the seat can move back and forth along the rail portion together with the slide pin. Further, when the seat moves to the rear side, the slide pin pushes up the rear side portion of the engagement arm portion and moves backward to engage with the engagement concave portion of the engagement arm portion. As a result, the seat can rotate about the slide pin and is prevented from coming off the rail portion due to the engagement between the slide pin and the engagement recess of the engagement arm portion. Moreover, as a slide recessed part in this case, it can comprise by the elongate hole and groove part extended in the front-back direction.

  Further, another structural feature of the seat structure of the personal watercraft according to the present invention is that a protrusion projecting in the left-right direction is formed at the other end of the support member, and the seat is pulled out from the accommodation space. The protrusion of the support member passes below the engagement arm portion and moves to the guide groove side, the support member supports the seat, and the slide pin engages with the engagement recess of the engagement arm portion. When the seat is lifted from the state and the protrusion of the support member is moved from the guide groove side to the rail part, the protrusion lifts the rear end of the engagement arm part, and the engagement recess of the engagement arm part And the engagement state between the slide pin and the slide pin is released.

  According to this, when the seat is pulled out from the accommodation space, the protrusion of the support member moves from the rail portion side to the guide groove side so as to push up the rear portion of the engagement arm portion. When the protrusion is positioned at the lower end of the guide groove and the support member supports the sheet, the slide pin engages with the engagement recess of the engagement arm portion. Further, when the seat is accommodated in the accommodating space, the support member is also lifted together with the seat by lifting the rear portion of the seat, and the protrusion lifts the rear end portion of the engagement arm portion. The engagement state between the recess and the slide pin is released. For this reason, a sheet | seat can be accommodated in an accommodation space part by pushing ahead in the state which followed the lower surface of the sheet | seat. As a result, the operation of unfolding and storing the sheet becomes extremely easy.

  In addition, another structural feature of the seat structure of the personal watercraft according to the present invention is that a guide piece is provided in the vicinity of the rail portion of the guide groove with a predetermined distance from the groove surface of the guide groove. When pulling backward from the inside of the housing space, the protrusion of the support member passes between the groove surface of the guide groove and the guide piece, lifts the seat, and moves the protrusion of the support member from the guide groove side to the rail part side. This is because, when moving, the protrusion moves over the outer surface of the guide piece and moves to the rail portion side.

  According to this, operation at the time of accommodating a sheet | seat in an accommodation space part becomes easy. That is, when the guide piece is not provided, when the sheet is lifted, the protrusion of the support member rises along the guide groove, but from that state, when the sheet is brought into a substantially horizontal state in order to accommodate the sheet in the accommodating space portion The protrusion of the support member again moves below the guide groove. For this reason, the boat operator needs to push the seat into the accommodation space with the seat and the support member overlapped with each other while the seat is lifted with one hand and the support member is placed along the lower surface of the seat with the other hand.

  In the present invention, when the guide piece is provided in the guide groove and the protrusion of the support member is moved from the guide groove side to the rail part side, the protrusion moves over the outer surface of the guide piece and moves to the rail part side. I am doing so. For this reason, it is prevented by the guide pieces that the protrusions are reversed and moved below the guide grooves, and the protrusions that have passed over the guide pieces move smoothly to the rail part side. Accordingly, the boat operator can hold the seat by a simple operation of holding the rear side of the seat with one hand and lifting it upward and then making it substantially horizontal and pushing it into the engine hatch.

  Further, another structural feature of the seat structure of the personal watercraft according to the present invention is that a steering pole provided with an engaging portion at the front end and a front side portion of the front deck portion of the hull in the front-rear direction. And an engaged portion that can be engaged in a state where the engaging portion is movable in the front-rear direction.

  In this small planing boat seat structure, the steering pole engaging part is engaged with the engaged part provided on the hull so that it can move in the front-rear direction. The position of the steering pole can be changed to an optimum position or a preferred position according to the attitude when maneuvering. For example, when the operator is seated on the seat and maneuvering, the steering pole is positioned at the front end of the moving range, and when the operator is maneuvering while standing, the steering pole is in the moving range. Located at the rear end. In this case, the engaging portion and the engaged portion can use mechanisms having various configurations, and the steering pole moves in the front-rear direction with respect to the hull via the engaging portion and the engaged portion. Any structure can be used.

  Further, another structural feature of the seat structure of the personal watercraft according to the present invention is that the front-rear movement restriction mechanism for restricting the front-rear movement of the engagement portion at a predetermined position in the front-rear direction of the hull is engaged. Is provided between the portion and the engaged portion.

  As the back-and-forth movement restricting mechanism in this case, for example, the engaging portion is composed of support shafts provided on both sides of the front end portion of the steering pole, and guide shafts are provided on both side portions on the rear side of the support shaft. The engaging portion is constituted by a slide groove that can move in a state where the support shaft and the guide shaft are engaged. And it can be set as the mechanism which provided the engagement recessed part which can engage a support shaft or a slide groove in the predetermined part of the edge of a slide groove. In this case, it is preferable that an engagement recess is provided at the upper edge of the slide groove to engage the support shaft, or an engagement recess is provided at the lower edge of the slide groove to engage the guide shaft.

  According to this, since a downward force is exerted on the rear side portion of the steering pole due to the weight of the steering pole, the front end portion of the steering pole is pushed upward with the guide shaft as a fulcrum, and the support shaft or guide shaft is Engage with the engaging recess more firmly. For this reason, the boat operator can operate the steering pole with the steering pole fixed at a predetermined position corresponding to the installation position of the engaging recess.

  Further, another structural feature of the seat structure of the personal watercraft according to the present invention is that when the engaging portion is positioned at least at the rearmost portion in the movement range in the front-rear direction, the steering pole has the engaging portion. This means that it can rotate in the vertical direction as the center. According to this, the boat operator can operate the boat while moving the steering pole up and down while standing on the floor at the rear of the hull. As a result, it becomes easier to maneuver the small planing boat, or it becomes possible to maneuver according to preference.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 and 2 show a personal watercraft 10 including a seat structure 20 according to the embodiment. In this small planing boat 10, a hull 10 a is composed of a deck 11 and a hull 12. And the front part side part of the deck 11 which comprises the upper part of the hull 10a is comprised by the front deck part 11a which rose upwards. In addition, a floor portion 11b made of a recess for standing by the operator is provided in the rear portion of the deck 11, and side wall portions 13a and 13b are formed on the left and right sides of the floor portion 11b.

  And the mounting recessed part 14 (The mounting recessed part of the side wall part 13b is not shown in figure) is formed in the lower side (hull 12) in the outer side of the side wall parts 13a and 13b, and the auxiliary hull 15a is formed in each mounting recessed part 14. , 15b are respectively attached. The auxiliary hulls 15a and 15b are installed in a state in which the position can be adjusted in the vertical direction via an elevating mechanism 16 composed of a rotary drive device or the like. Enlarge. Thereby, buoyancy increases and the stability of the personal watercraft 10 improves. In addition, when the auxiliary hulls 15a and 15b are positioned above, the chine width becomes small. As a result, the personal watercraft 10 becomes sporty while the bank angle during turning increases.

  Further, a steering handle 17 having an operation grip 17 a is provided above the substantially center of the hull 10 a in the front-rear direction, and a seat 21 is provided behind the steering handle 17. The steering handle 17 is connected to the hull 10a via a connection pole 18 that is mounted in a state of being rotatable in the vertical direction around the support shaft 18a. Further, the steering handle 17 is connected to the rear end portion of the connection pole 18 so as to be rotatable in the left-right direction around the rear end portion of the connection pole 18. The steering handle 17 and the connection pole 18 constitute a steering pole.

  The connection pole 18 is attached to the upper surface of the front deck portion 11a as shown in FIGS. In other words, on the upper surface of the front deck portion 11a, there is provided an accommodation support portion 51 that accommodates and supports the front end side portion of the connection pole 18 so as to be able to advance and retreat. The accommodation support part 51 is constituted by a box-like accommodation part having an open rear end part, the upper part is constituted by a surface part of the front deck part 11a, and the bottom part is constituted by a base part 11c of the front deck part 11a. . Both side portions are constituted by plate-like brackets 52a and 52b. The brackets 52a and 52b are provided with a support shaft slide groove 53 and a guide shaft slide groove 54 (the support slide groove and the guide slide groove of the bracket 52b). Are not shown).

  The support shaft slide groove 53 is formed of a long hole that is slightly upwardly inclined from the front end portion to the rear end portion along the inclination of the base portion 11c of the front deck portion 11a, and the inclination angle of the rear side portion is the front side portion. It is formed so as to be slightly larger than the inclination angle. A support shaft engaging recess 53 a is formed at the upper edge of the front end portion of the support shaft slide groove 53. The support shaft engaging recess 53a extends upward with the same width as the support shaft slide groove 53, and is formed so that the shape of the upper end viewed from the side is substantially semicircular.

  The guide shaft slide groove 54 is formed by a long hole formed at the upper rear portion of the support shaft slide groove 53 in the brackets 52a and 52b, and is inclined upward from substantially above the center portion of the support shaft slide groove 53. It extends rearward and the rear part is formed by an arc-shaped groove 55. The inclination angle of the front side portion of the guide shaft slide groove 54 is set to be slightly larger than the inclination angle of the rear side portion of the support shaft slide groove 53. The rear portion of the front side portion of the guide shaft slide groove 54 is bent so as to curve upward, and then communicates with the arc-shaped groove portion 55.

  The arc-shaped groove portion 55 is formed in an arc shape centering on the rear end portion 53 b of the support shaft slide groove 53, and the lower end portion 55 a has a height of the rear end portion 53 b of the support shaft slide groove 53. It is set to a height approximately equal to the height. A guide shaft engaging recess 55 b is formed at the lower edge of the portion where the rear end portion of the front portion of the guide shaft slide groove 54 and the upper end portion of the arcuate groove portion 55 intersect. . The guide shaft engaging recess 55b is formed so that the shape viewed from the side surface is substantially semicircular.

  A lever 56 and a spring 57 are attached to the outer surfaces of the brackets 52a and 52b, respectively. The lever 56 is formed in a substantially bowl shape having a long side portion 56 a and a short side portion 56 b, and a base end side portion is supported in a rotatable state by a rotation support shaft 58. And the spring 57 is spanned between the front end side part of the short side part 56b, and the substantially center part in the outer surface upper part of bracket 52a, 52b, and urges | biases the long side part 56a of the lever 56 upwards. ing. The long side portion 56a extends to the rear portion of the arc-shaped groove portion 55 so that when the spring 57 contracts to the minimum length, the rear end portion (upper end portion) reaches the position of the guide shaft engaging recess portion 55b. It is configured.

  Further, a hole portion penetrating both sides is formed in the front end portion of the connection pole 18, and a support shaft 18a is fixed to the hole portion. Both end portions of the support shaft 18 a protrude from the side surface of the connection pole 18 and extend into the support shaft slide groove 53. A guide shaft 18b is fixed to the lower portion of the connection pole 18 with respect to the support shaft 18a, and both ends of the guide shaft 18b extend into the guide shaft slide groove 54.

  The guide shaft 18 b is positioned at the front end portion 54 a of the guide shaft slide groove 54 when the support shaft 18 a is positioned at the front end portion of the support shaft slide groove 53, and the support shaft 18 a is It is attached so as to be positioned in the arcuate groove 55 when positioned at the rear end 53b. Further, the support shaft 18a, the support shaft engaging recess 53a, the guide shaft 18b, and the guide shaft engaging recess 55b constitute a front-rear movement restricting mechanism in the present invention.

  The seat 21 is installed behind the hatch cover 22 formed on the upper rear side of the front deck portion 11a, and can move forward and backward with respect to the hatch cover 22. That is, as shown in FIG. 5, an engine hatch 22a is formed on the rear upper portion of the front deck portion 11a, and covers the engine hatch 22a so that the hatch cover 22 can be opened and closed. Further, a seal portion 19 is provided between the main body portion of the front deck portion 11 a and the hatch cover 22, and the front deck portion 11 a is sealed watertight by the seal portion 19. The seat structure 20 according to the present invention is composed of the seat 21, the hatch cover 22, the engine hatch 22a, and the like, and a disassembled state thereof is shown in FIG.

  The hatch cover 22 is configured by combining an inner cover 23 located on the inner side of the front deck portion 11a and an outer cover 24 constituting the outer surface of the front deck portion 11a. An accommodation space 22b is formed between them. That is, the inner cover 23 is configured by a cover member including a base portion 23a whose upper surface is planar, and the outer cover 24 forms an accommodation space portion 22b between the upper surface of the base portion 23a of the inner cover 23. In this state, the cover member is formed of a curved cover member that covers the upper surface of the inner cover 23.

  An opening 24a is formed from the upper surface rear end side portion of the outer cover 24 to the rear end surface upper side portion, and a fixing recess 24b is formed below the opening 24a on the rear end surface of the outer cover 24. . Four screw holes 24c are formed at intervals in the four corners around the fixing recess 24b on the rear end surface of the outer cover 24. A base portion 25 extending in the front-rear direction is fixed on the base portion 23a of the inner cover 23 via a fixing screw (not shown).

  The base portion 25 is formed in a shape in which a pair of rail portions 25b and 25c each having a side surface portion having a low height are provided on both side edges along the longitudinal direction of a rectangular bottom surface portion 25a elongated in the front-rear direction. Has been. In the rail portions 25b and 25c, slide long holes 26a and 26b are formed along the longitudinal direction as slide concave portions of the present invention penetrating left and right.

  In addition, engaging arm portions 27a and 27b can be rotated in the vertical direction by the support shafts 28a and 28b at the upper portion of the rear side portion (the upper side of the slide long holes 26a and 26b) on the inner surfaces facing the rail portions 25b and 25c, respectively. It is attached in the state. As shown in FIG. 7, the engagement arm portion 27 a is configured by a member extending in the front-rear direction, and a shaft hole 29 a for passing the support shaft 28 a is formed at the front end portion. An engagement recess 29b is formed on the rear end side slightly from the central portion at the lower edge of the engagement arm portion 27a, and a square plate-like push-up is performed from the rear end portion on the inner surface lower end portion of the engagement arm portion 27a. The piece 29c protrudes in the horizontal direction. The engagement arm portion 27b is formed in a symmetrical shape with the engagement arm portion 27a, and is attached to the rail portion 25c via a support shaft 28b at a position facing the engagement arm portion 27a.

  A rear end portion of the base portion 25 is connected to the guide groove forming portion 31. The guide groove forming portion 31 includes a guide surface portion 31a, a wall surface portion 31b, and a fixing piece 31c, and is attached to the rear end surface of the outer cover 24 by fixing the fixing piece 31c to the fixing recess 24b. . The guide surface portion 31a has an upper end connected to the rear end portion of the bottom surface portion 25a of the base portion 25, and extends rearward and downward from the rear end portion of the bottom surface portion 25a of the base portion 25 while gradually increasing the inclination angle. The lower end portion is formed of a curved plate having a substantially vertical surface.

  The wall surface portion 31b is formed to extend rearward (in a direction orthogonal to the guide surface portion 31a) along the left and right edge portions and the lower end edge portion of the guide surface portion 31a, and the lower side portion is formed with a constant width. The upper side portion is formed by a tapered wall surface that becomes narrower as it goes upward. Moreover, the fixing piece 31c is comprised by the flange-shaped protrusion piece formed so that it might each extend outside (left-right direction and the downward direction) from the edge part of the lower side part of the wall surface part 31b. Four screw holes 31d are formed at four intervals in the four corners of the fixed piece 31c.

  And the guide hole formation part 32 is being fixed to the surface side of the fixing piece 31c of the guide groove formation part 31. FIG. The guide hole forming part 32 is configured to have a shape in which a guide hole 32a composed of a long hole whose upper part is opened is formed at the center of a plate-like body having a shape substantially equal to the shape of the entire rear surface of the guide groove forming part 31. Yes. In the portion corresponding to the fixed piece 31c of the guide groove forming portion 31 in the guide hole forming portion 32, four screw holes 32b are formed at intervals. Then, by passing four (only two shown) fixing screws 33 through the screw holes 32b and 31d and screwing them into the screw holes 24c, the guide groove forming part 31 and the guide hole forming part 32 are Is fixed to the outer cover 24. A guide groove 34 according to the present invention is constituted by a space formed by the guide groove forming portion 31 and the guide hole forming portion 32.

  In addition, guide pieces 35 a and 35 b are attached to the left and right sides of the upper side portion in the guide groove 34. As shown in FIG. 8, the guide piece 35a includes a fixed piece 36a, a swing piece 36b, and a support shaft 36c. The fixed piece 36a is fixed to the inner surface of the wall surface portion 31b, and is composed of a member that is curved along the upper side portion of the guide groove 34 and that the upper side is thin and the lower side is thick. The swing piece 36b is configured by a member that is rotatably attached to a support shaft 36c fixed to the inner surface of the wall surface portion 31b, and whose lower side portion is tapered. In the natural state, the swing piece 36b is installed so that the lower end portion faces directly below, and the space between the lower end portion and the guide surface portion 31a is narrow, and the space between the lower end portion and the guide hole forming portion 32 is wide.

  The seat 21 includes a plate-like movable portion 21a that is elongated in the front-rear direction, and is configured by attaching a cushion portion 21b to the upper surface of the movable portion 21a. The rear end surface of the sheet 21 is formed in a shape that can close the opening 24a of the outer cover 24 with almost no gap. For this reason, when the sheet 21 is accommodated in the hatch cover 22, the rear end surface of the hatch cover 22 is not uneven.

  Further, a side wall portion is formed at the edge portion along the longitudinal direction of the movable portion 21a, and a slide pin 37 is stretched over and attached to the front end portions of the both side wall portions. Both end portions of the slide pin 37 are engaged with each other so as to be movable in the front-rear direction along the slide elongated holes 26a, 26b of the rail portions 25b, 25c, respectively. When the slide pin 37 moves to the rear side of the slide long holes 26a, 26b, the rear end side portions of the engagement arm portions 27a, 27b are pushed up to engage with the engagement recess 29b. This prevents the sheet 21 from being detached from the base portion 25. In this state, the seat 21 can rotate around the slide pin 37 around the axis of the slide pin 37.

  In addition, a connecting member 38 having a shaft hole 38a penetrating in the left-right direction is fixed to a substantially central portion in the front-rear direction on the lower surface of the movable portion 21a, and the shaft hole 38a of the connecting member 38 is connected to the shaft hole 38a via the rotation shaft 39a. A support member 39 is connected. The support member 39 is composed of a gas damper whose length can be adjusted. The support member 39 has an impact relaxation function that can arbitrarily change the entire length and absorb and relax the impact. Further, projecting portions 39b and 39c made of cylindrical rollers projecting left and right are formed at the lower ends of the pair of rod-shaped portions provided at the lower portion of the support member 39, respectively.

  As shown in FIG. 9, the protrusions 39 b and 39 c are movable on the bottom surface portion 25 a of the base portion 25 and in the guide groove 34. That is, when moving from the front end side of the bottom surface portion 25a toward the lower end side of the guide groove 34, the surface moves along the bottom surface portion 25a and the guide surface portion 31a. At that time, the push-up piece 29c is pushed up to pass below the engaging arm portions 27a and 27b, and further, the swing piece 36b is pushed backward to pass between the guide surface portion 31a and the swing piece 36b.

  Further, when the protrusions 39 b and 39 c move upward from the lower end side of the guide groove 34, the protrusions 39 b and 39 c pass between the swing piece 36 b and the guide hole forming part 32. Further, when the protrusions 39b and 39c move from the upper end side of the guide groove 34 toward the front end side of the bottom surface part 25a, as shown in FIG. 10, the protrusions 39b and 39c are moved upward. Is pushed up and passes below the engaging arm portions 27a and 27b. At this time, the engagement between the slide pin 37 and the engagement recesses 29b of the engagement arm portions 27a and 27b is released.

  Further, the support member 39 is formed to have a size that can pass between the pushing-up pieces 29c of the engaging arm portions 27a and 27b, between the guide pieces 35a and 35b, and inside the guide hole 32a. For this reason, the support member 39 can be accommodated on the base portion 25 in the accommodation space 22 b together with the sheet 21 by being along the lower surface of the sheet 21. That is, the support member 39 is accommodated between the bottom surface portion 25 a and the sheet 21. When the sheet 21 is pulled out from the accommodation space 22b, the sheet 21 is positioned in the guide hole 32a so as to be movable in the vertical direction.

  Since the seat structure 20 is configured as described above, the seat 21 can be accommodated in the accommodating space portion 22b or pulled out from the accommodating space portion 22b in accordance with the ship maneuvering state or the operator's preference. That is, when the operator operates the small planing boat 10 while sitting on the seat 21, the seat 21 is pulled out from the hatch cover 22 and supported by the support member 39 as shown in FIGS. 1 and 2.

  Further, when the boat operator steers the small planing boat 10 while standing on the floor portion 11b, the seat 21 is accommodated in the accommodation space portion 22b to be in the state shown in FIGS. The hatch cover 22 is rotatable around a support shaft (not shown) provided at the lower rear end, and the front portion of the hatch cover 22 is moved upward with the connection pole 18 raised upward. The upper surface of the front deck portion 11a can be opened by rotating from the rear toward the rear. Thereby, inspection, repair, etc. in the hull 10a can be performed.

  Further, as shown in FIGS. 1 and 2, an engine 41 is provided in the center of the bottom portion in the hull 10a, and a front side portion in the hull 10a is used to guide external air into the hull 10a. An air duct 42 is provided. The air duct 42 is formed so as to extend vertically from the upper part of the hull 10a to the bottom of the hull 10a, and sucks outboard air from the upper end through a waterproof structure (not shown) provided on the front deck part 11a. In this case, a configuration is adopted in which the lower end is led to the bottom side in the hull 10a. And the fuel tank 43 for accommodating a fuel is installed in the front part side in the hull 10a.

  An intake box 44 is installed between the engine 41 and the fuel tank 43 in the hull 10a. The intake box 44 supplies air taken into the hull 10 a through the air duct 42 to the engine 41. Further, the engine 41 is supplied with fuel from the fuel tank 43. The fuel supplied from the fuel tank 43 is atomized by a fuel injection device (not shown) and injected into the cylinder of the engine 41. At this time, the fuel is mixed with the air supplied from the intake box 44 and sent to the engine 41 as an air-fuel mixture, and the air-fuel mixture explodes by ignition of an ignition device provided in the engine 41.

  Further, a crankshaft (not shown) extends rearward from the rear portion of the engine 41. The crankshaft changes the vertical movement of a piston (not shown) due to the explosion of the air-fuel mixture into a rotational motion. An impeller shaft (not shown) is connected to the crankshaft, and the impeller shaft is connected to a jet propulsion unit 45 provided at the stern of the hull 10a. The impeller shaft is connected to an impeller (not shown) attached to the inside of the jet propulsion unit 45, and transmits the rotational force of the crankshaft driven by the engine 41 to the impeller to rotate the impeller.

  The jet propulsion unit 45 includes a water introduction port 45a that opens to the bottom of the hull 10a and an injection nozzle (not shown) that opens to the stern. The water introduced from the water introduction port 45a is injected by rotation of the impeller. A propulsive force is generated in the hull 10a by spraying from the nozzle. The jet propulsion unit 45 is attached to the bottom of the stern of the hull 10a in a state isolated from the main body side of the hull 10a by a casing (not shown), and the impeller shaft penetrates the casing to The jet propulsion unit 45 extends from the 41 side. A steering nozzle (not shown) is attached to the rear of the injection nozzle. The steering nozzle is connected to the steering handle 17 via an operation wire, and swings left and right in accordance with the operation of the steering handle 17.

  The engine 41 is connected to an exhaust device including exhaust pipes 46a and 46b and a water lock 46c. The exhaust pipe 46a sends the combustion gas discharged from the engine 41 to the water lock 46c. The water lock 46c is composed of a tank having a wide lower portion and a narrow upper portion, and an exhaust pipe 46a is connected to the lower side of the side surface, and an exhaust pipe 46b is connected to the upper surface. The exhaust pipe 46b extends upward from the upper surface of the water lock 46c, and then extends downward at the rear. The downstream end of the exhaust pipe 46b opens to a casing for isolating the jet propulsion unit 45 from the main body side of the hull 10a, and communicates with the outside from the rear end of the hull 10a.

  In addition to the above-described devices, the small planing boat 10 is an electric control device including a CPU, a ROM, a RAM, a timer, and the like, an electrical box that houses various electric devices, and various small boats such as various sensors and switches. Various devices necessary for driving 10 safely are provided.

  Next, an operation in the case of running the personal watercraft 10 configured as described above will be described. When the operator operates the personal watercraft 10 while sitting on the seat 21, the seat 21 is pulled out from the hatch cover 22 and supported by the support member 39. In this case, the seat 21 first protrudes rearward from the hatch cover 22 shown in FIG. 14 from the state accommodated in the hatch cover 22 shown in FIG. 13. At this time, the slide pin 37 is engaged with the engagement recesses 29b of the engagement arm portions 27a and 27b, and the protrusions 39b and 39c of the support member 39 are positioned on the rear end portion of the bottom surface portion 25a. Yes.

  Next, as shown in FIG. 15, the rear end portion of the sheet 21 is lifted so that the inclination angle of the sheet 21 from the horizontal plane becomes the set angle at the time of deployment. This set angle is a preset angle. When the sheet 21 is at this angle, the protrusions 39b and 39c can move from the bottom surface portion 25a to the guide groove 34 side. At this time, the positions of the protrusions 39b and 39c are circles A indicated by a two-dot chain line in FIG. Thereby, the protrusions 39b and 39c of the support member 39 are pulled rearward and moved from the rear end portion of the bottom surface portion 25a onto the guide surface portion 31a. Then, the rear end portion of the sheet 21 is released and moved downward to obtain the state shown in FIG. As a result, the protrusions 39b and 39c of the support member 39 descend along the guide surface portion 31a and engage with the lower end portion of the guide groove 34 (the lower end portion of the wall surface portion 31b), and the central portion of the seat 21 is the support member 39. Supported by.

  In this state, the boat operator gets into the small planing boat 10 and sits on the seat 21 and holds the operation grip 17a by hand. Then, a start switch (not shown) is turned on. As a result, the small planing boat 10 is allowed to travel, and the boat operator operates the steering handle 17, and the small planing boat 10 responds to each operation by operating the throttle operator provided on the operation grip 17a. The vehicle travels in a predetermined direction at a predetermined speed. At this time, by manipulating the elevating mechanism 16 and moving the auxiliary hulls 15a and 15b up and down, the boat can be operated according to the preference of the operator. In this case, the connection pole 18 is positioned on the front end side in the movement range by engaging the support shaft 18a and the support shaft engaging recess 53a.

  Next, when the boat operator drives the personal watercraft 10 while standing on the floor portion 11b, the boat operator first gets off the seat 21 and stands on the floor portion 11b. Next, from the state shown in FIG. 16, the rear part of the seat 21 is lifted to a state close to the state shown in FIG. Accordingly, the sheet 21 rotates about the slide pin 37, and the protrusions 39b and 39c of the support member 39 pass between the swing piece 36b of the guide pieces 35a and 35b and the guide hole forming portion 32. The inside of the guide groove 34 rises.

  The inclination angle of the seat 21 is a set angle at the time of storage. This set angle is a preset angle, and is set to be slightly larger than the set angle at the time of deployment described above. Further, when the sheet 21 is at this angle, the protrusions 39b and 39c can move from the guide groove 34 toward the bottom surface 25a without descending. The positions of the protrusions 39b and 39c at this time are circles B indicated by two-dot chain lines in FIG. When the inclination angle of the sheet 21 becomes the set angle at the time of storage and the protrusions 39b and 39c rise to a predetermined position, the rear end portion of the sheet 21 is released to the state shown in FIG.

  At this time, the protrusions 39b and 39c are prevented from being lowered by the fixing pieces 36a of the guide pieces 35a and 35b, and move to the bottom face portion 25a side. Then, as shown in FIG. 10, the protrusions 39b and 39c push up the push-up piece 29c of the engagement arm portions 27a and 27b, and the slide pin 37 and the engagement recess 29b of the engagement arm portions 27a and 27b. Release the engagement. At this time, the support member 39 is in a state along the lower surface of the sheet 21. Next, the sheet 21 is pushed forward to the state shown in FIG. Thereby, the sheet 21 and the support member 39 are accommodated in the accommodating space 22b.

  Further, the steering handle 17 is lifted upward to release the engagement between the support shaft 18a and the support shaft engaging recess 53a, and the steering handle 17 is pulled rearward. As a result, the steering handle 17 moves upward on the rear side along the track indicated by the alternate long and short dash line a in FIG. That is, in this state, the support shaft 18a is positioned at the rear end portion 53b of the support shaft slide groove 53, and the guide shaft 18b is engaged with the guide shaft engagement recess 55b. For this reason, when the operator standing on the floor portion 11b holds the steering handle 17 downward, the connection pole 18 is maintained in that state. This makes it easier to operate the boat while the operator is standing.

  Further, when the boat operator makes a sporty run such as turning the small planing boat 10 rapidly while moving the steering handle 17 up and down while standing on the floor portion 11b, the steering handle 17 is lifted upward. Pull back in the state. As a result, the engagement between the guide shaft 18 b and the guide shaft engaging recess 55 b is released, and the guide shaft 18 b becomes movable in the arcuate groove portion 55. Therefore, the steering handle 17 can move along the track indicated by the alternate long and short dash line b in FIG.

  In a state where the guide shaft 18 b is located in the arcuate groove portion 55, the guide shaft 18 b is biased upward by the lever 56 and the spring 57. For this reason, the driver can move the steering handle 17 within the range of the trajectory indicated by the one-dot chain line b in FIG. 3 only by lightly operating the steering handle 17 up and down. For this reason, the boat operator can make a sporty run such as turning the small planing boat 10 rapidly while moving the steering handle 17 up and down while standing on the floor portion 11b.

  As described above, in the personal watercraft 10 according to the present embodiment, when the operator wants to operate the boat while sitting on the seat 21, the seat 21 protrudes to the rear of the hatch cover 22, and the operator keeps standing. When maneuvering in a posture, the seat 21 can be accommodated in the accommodating space 22b. As a result, it is possible to arbitrarily perform both maneuvering in an easy posture and sporty maneuvering while shifting weight.

  Further, the operation for unfolding the sheet 21 is as simple as holding the rear end of the sheet 21 with one hand, pulling it backward, lifting it upward by a predetermined angle, and releasing the hand. Further, the operation for accommodating the seat 21 in the accommodating space 22b can be performed simply by holding the rear end portion of the sheet 21 with one hand, lifting it upward and then putting it in a horizontal state and pushing it forward. . Therefore, the operation of unfolding / accommodating the seat 21 is extremely easy, and the unfolding / accommodating operation can be performed without breaking the balance even on unstable water.

  Furthermore, when the sheet 21 is accommodated in the accommodating space 22b, the rear end surface of the sheet 21 constitutes a part of the hatch cover 22, and irregular irregularities do not occur on the rear end surface of the hatch cover 22. Will not be damaged. When the seat 21 is pulled out behind the hatch cover 22, the front end portion of the seat 21 is supported by the rear end portion of the base portion 25, and the substantially central portion of the seat 21 is supported by the support member 39. Will be in a stable state. For this reason, the vessel operator can operate the vessel with a stable posture.

  Further, since the length of the support member 39 can be adjusted, the height of the rear side portion of the seat 21 can be changed according to the physique of the ship operator. Furthermore, when the sheet 21 is accommodated in the accommodating space 22b, the support member 39 can be folded compactly and accommodated together with the sheet 21, so that the space of the accommodating space 22b can be reduced. Further, since the support member 39 is constituted by a gas damper, the impact is alleviated and the riding comfort of the personal watercraft 10 is improved. As a result, comfortable sliding can be performed. Further, the impact mitigating function of the support member 39 reduces the impact load applied by the operator to the seat 21 and the hull 10a, so that the seat 21 and the hull 10a are less likely to be damaged or consumed.

  Moreover, the seat structure of the personal watercraft according to the present invention is not limited to the above-described embodiment, and can be implemented with appropriate modifications. For example, in the above-described embodiment, the slide concave portion is configured by the slide long holes 26a and 26b. However, as the slide concave portion, any member that can move the seat 21 in the front-rear direction may be used. May be. Further, the support member 39 is not limited to a gas damper, and may be a damper using a spring or another member having an impact relaxation function. In addition, the structure and materials of the members constituting the seat structure 20 and the personal watercraft 10 other than the parts described above can be appropriately changed within the technical scope of the present invention.

It is a side view showing a personal watercraft provided with a seat structure concerning one embodiment of the present invention. FIG. 2 is a plan view of the personal watercraft shown in FIG. 1. It is a side view which shows the state which a steering handle moves. It is a top view which shows the state which a steering handle moves to the front-back direction. It is sectional drawing of the part in which the seat structure in the small planing boat was provided. It is a disassembled perspective view of a sheet structure. It is an expansion perspective view of an engagement arm part. It is sectional drawing which shows the attachment state of a guide piece. It is sectional drawing which shows the state which the protrusion part of a supporting member moves. It is a schematic side view which shows the state which the protrusion of a supporting member lifts the rear part of an engagement arm part. It is a side view which shows the state which accommodated the sheet | seat of the small planing boat shown in FIG. FIG. 10 is a plan view of the personal watercraft shown in FIG. 9. It is a schematic sectional drawing which shows the state in which the sheet | seat was accommodated. It is a schematic sectional drawing which shows the state which pulled out the sheet | seat back. FIG. 6 is a schematic cross-sectional view showing a state where the rear part of the drawn sheet is lifted up It is a schematic sectional drawing which shows the state which supported the sheet | seat with the supporting member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Small planing boat, 10a ... Hull, 11 ... Deck, 11b ... Floor part, 11a ... Front deck part, 17 ... Steering handle, 18 ... Connection pole, 18a ... Support shaft, 18b ... Guide shaft, 20 ... Seat structure, DESCRIPTION OF SYMBOLS 21 ... Seat, 21a ... Movable part, 22 ... Hatch cover, 22a ... Engine hatch, 22b ... Housing space part, 24a ... Opening part, 25b, 25c ... Rail part, 26a, 26b ... Slide long hole, 27a, 27b ... Engagement Joint arm portion, 28a, 28b ... support shaft, 29a ... shaft hole, 29b ... engagement recess, 29c ... push-up piece, 31 ... guide groove forming portion, 32 ... guide hole forming portion, 32a ... guide hole, 34 ... guide Groove, 35a, 35b ... guide piece, 37 ... slide pin, 39 ... support member, 39b, 39c ... projection, 53 ... slide groove for support shaft, 53a ... engagement recess for support shaft, 54 Slide grooves guide shaft, 55 ... arcuate groove portion, 55b ... guide shaft engagement recess.

Claims (14)

The front side part of the deck that constitutes the upper part of the hull is composed of a front deck part that swells upward, and a planar floor part is formed on the rear side part of the deck, and the front and rear direction of the hull A steering structure provided in the upper part of the center of the boat, and a seat structure for a small planing boat provided with a seat for the operator to sit behind the front deck portion in the hull,
An engine hatch that can be opened and closed by a hatch cover is provided at a rear side portion of the front deck portion in the hull, and an accommodation space is formed above the engine hatch so that the seat can be accommodated in the accommodation space. A small planing boat seat structure.   An opening is provided at a rear end portion of the hatch cover so that the sheet can be accommodated in the accommodation space portion from the opening portion, and when the sheet is advanced and accommodated in the accommodation space portion, The seat structure of a personal watercraft according to claim 1, wherein an end surface constitutes a part of the hatch cover.   A rail portion extending in the front-rear direction is provided in the housing space portion, the seat includes a movable portion that can move along the rail portion, and the movable portion moves back and forth along the rail portion, The seat structure of a personal watercraft according to claim 2, wherein the seat is accommodated in the accommodation space portion or protrudes rearward from the front deck portion.   An engagement mechanism is provided between the front end portion of the seat and the rear end portion of the rail portion, and a support member is provided for supporting a rear side portion with respect to the front end portion of the seat. When the rear end portion of the seat is positioned, the front end portion of the seat is supported in a state of being engaged with the rear end portion of the rail portion, and the rear side portion of the seat is supported by the support member. The seat structure for a personal watercraft according to claim 3.   The seat of the personal watercraft according to claim 4, wherein the engagement mechanism is configured by a mechanism that engages with a rear end portion of the rail portion in a state in which a front end portion of the seat is rotatable in a vertical direction. Construction.   One end portion of the support member is attached to the lower surface of the seat in a vertically rotatable state, and a guide groove is provided from the rear end side of the rail portion to the lower side of the rear end surface of the hatch cover. When the other end portion is movable along the guide groove and the sheet is accommodated in the accommodating space, the support member is accommodated along the lower surface of the sheet and accommodated in the accommodating space along with the sheet, The said support member engages with the lower end part of the said guide groove when the said sheet | seat is moved back and it protrudes from the said front deck part, The said sheet | seat is supported. The seat structure of a small planing boat.   The seat structure of a personal watercraft according to any one of claims 4 to 6, wherein the support member is formed of an impact reducing member.   The seat structure of a personal watercraft according to any one of claims 4 to 7, wherein the length of the support member is adjustable.   The rail portion is provided with a pair of slide concave portions provided at left and right intervals, each extending in parallel in the front-rear direction, and the engagement mechanism is provided at a front end portion of the seat, and both ends are the pair of slide concave portions. A slide pin that can be engaged in a movable state, and a front end side portion that is attached to the rear end side portion of the rail portion so that the slide pin can rotate upward from the track when the slide pin moves. 9. The structure according to claim 4, further comprising: an engaging arm portion that is located in a track when the slide pin moves and is provided with an engaging recess portion that is engageable with the slide pin at a lower portion of the rear side portion. The seat structure of a personal watercraft as described in any one of them.   A protrusion protruding in the left-right direction is formed at the other end of the support member, and the protrusion of the support member passes below the engagement arm when the seat is pulled out from the housing space. Then, the sheet is moved to the guide groove side, the support member supports the sheet, and the slide pin lifts the sheet from a state where the slide pin is engaged with the engagement recess of the engagement arm portion, and the support member When the protrusion is moved from the guide groove side to the rail part side, the protrusion lifts the rear end of the engagement arm part, and the engagement recess of the engagement arm part and the slide pin The seat structure of a personal watercraft according to claim 9, wherein the engagement state is released.   Providing a guide piece at a predetermined distance from the groove surface of the guide groove in the vicinity of the rail portion in the guide groove, and when the seat is pulled out from the housing space, the protrusion of the support member is When the protrusion passes through between the groove surface of the guide groove and the guide piece, lifts the seat, and moves the protrusion of the support member from the guide groove to the rail part, the protrusion is The seat structure of a personal watercraft according to claim 10, wherein the seat structure moves over the outer surface of the guide piece and moves toward the rail portion.   A steering pole provided with an engaging portion at the front end and a front-side portion of the front deck portion of the hull are provided along the front-rear direction so that the engaging portion can be engaged in a movable state in the front-rear direction. The seat structure of a personal watercraft according to any one of claims 1 to 11, further comprising an engaging portion.   The back-and-forth movement restricting mechanism for restricting the back-and-forth movement of the engaging portion at a predetermined position in the front-rear direction of the hull is provided between the engaging portion and the engaged portion. Small planing boat seat structure. 14. The steering pole according to claim 12 or 13, wherein the steering pole is rotatable up and down around the engaging portion when the engaging portion is positioned at least at a rearmost portion within a moving range in the front-rear direction. The seat structure of a small planing boat.

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